A double-pass spiral-wound diffusion dialysis membrane module and its preparation method

A technology of diffusion dialysis and membrane modules, applied in the field of spiral separation membrane modules and their preparation, can solve the problems of short process flow and low continuous production efficiency, and achieve the effects of fast flow speed, easy rolling operation and low automation requirements.

Active Publication Date: 2020-07-10
HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double-pass spiral-wound diffusion dialysis membrane module and its preparation method to solve the problems of low continuous production efficiency and short flow of the existing spiral-wound diffusion dialysis membrane module

Method used

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  • A double-pass spiral-wound diffusion dialysis membrane module and its preparation method
  • A double-pass spiral-wound diffusion dialysis membrane module and its preparation method
  • A double-pass spiral-wound diffusion dialysis membrane module and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation process of a spiral-wound diffusion dialysis membrane module with a membrane area of ​​1.1 square meters

[0023] figure 1 It is a schematic diagram of the overall structure of the double-pass spiral-wound diffusion dialysis membrane module of the present invention; figure 2 A schematic diagram of the central tube of a double-pass spiral-wound diffusion dialysis membrane module is given. A fixed blocking plate 8 is installed in the middle of the center tubes 1 and 3, and the center tubes 1 and 3 are divided into left and right parts, namely 1B and 1A and 3B and 3A; an ion exchange sheet is sandwiched between the two center tubes 1 and 3 Membrane 2 and two flow channel partitions 4 and 5, so that the two flow channel partitions 4 and 5 are respectively arranged on both sides of the ion exchange membrane 2, keeping the central tube 1 and 3 as the boundary, and the lengths of the ion exchange membranes at both ends are equal, and the The ion excha...

Embodiment 2

[0037] Example 2: Recovery of Industrial Titanium White Waste Acid by Two-pass Spiral-Wound Diffusion Dialysis Membrane Module

[0038] Use as attached Figure 5 The waste acid recovery performance test device of the double-pass spiral-wound diffusion dialysis membrane module shown in , uses the double-pass spiral-wound diffusion dialysis membrane module 13 in Example 1 to carry out the waste acid recovery process test, simulating industrial titanium white waste acid liquid, prepared H 2 SO 4 / FeSO 4 Feed liquid samples, the concentrations are shown in Table 1:

[0039] Table 1H 2 SO 4 / FeSO 4 Concentration of Feed Liquid Sample

[0040]

[0041] Inject waste acid and tap water of equal volume into waste acid head tank 14 and water head tank 15 respectively, adjust acid and water flow, maintain the flow ratio of waste acid and tap water to be about 1-2, keep the liquid level, after being stabilized, Measure the concentration of sulfuric acid and ferrous sulfate in t...

Embodiment 3

[0045] Example 3: Recovery of foil waste liquid by double-pass spiral-wound diffusion dialysis membrane modules

[0046] Using the dual-pass spiral-wound diffusion dialysis membrane module 13 in Example 1 to simulate the recovery process test of foil waste liquid, prepare HCl / AlCl 3 Feed liquid samples, the concentrations are shown in Table 3:

[0047] Table 3 HCl / AlCl 3 Concentration of Feed Liquid Sample

[0048]

[0049] Inject waste acid and tap water of equal volume into waste acid head tank 14 and water head tank 15 respectively, adjust acid and water flow, maintain the flow ratio of waste acid and tap water to be about 0.9-1.2, keep liquid level, after being stabilized, Measure the concentration of hydrochloric acid and aluminum chloride in residual acid and recovered acid, and calculate H + Recovery rate, Al 3+ leak rate etc. Determination of AlCl by complexometric titration 3 For the concentration of aluminum ions in the solution, the concentration of hydroge...

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Abstract

The present invention discloses a two-way spiral wound diffusion dialysis membrane assembly and a preparation method thereof. According to the two-way spiral wound diffusion dialysis membrane assembly, an ion exchange membrane and flow channel separation nets closely contact with each other and are wound by using a pair of spliced center pipes as the axis to form a cylinder; the spaces supported by the flow channel separation nets form fluid channels, and the fluid channels are always positioned on both sides of the ion exchange membrane so as to respectively form a diffusion liquid flow channel and a dialysis liquid flow channel; the axial middles of each center pipe are blocked by a blocking plate so as to form a left part and a right part, and the leaf part and the right part are not communicated to each other; the edge of the flow channel separation net is sealed; a baffle is arranged at the 1 / 2 width position of the flow channel separation et and extends from the center pipe to a position a certain distance away from the bottom edge; and a diffusion liquid and a dialysis liquid form two-way spiral countercurrent flow in the membrane assembly. According to the present invention, the membrane assembly has advantages of high packing density, high mass transfer efficiency, high unit membrane area liquid treatment capacity, and easy automated production.

Description

technical field [0001] The invention belongs to the technical field of membrane separation equipment, and in particular relates to a spiral separation membrane module and its components, which are rolled together around a central pipe by ion exchange membranes and flow channel partitions, and use the principle of diffusion dialysis to separate and recover industrial waste acids or alkalis. Preparation. Background technique [0002] Diffusion dialysis uses the concentration difference as the driving force, and uses ions to selectively permeate through the membrane to achieve the purpose of separation. Theoretically, it does not consume energy. For example, anion-membrane diffusion dialysis technology utilizes the difference in selective permeability of anion-exchange membranes for hydrogen ions and metal ions to separate acids and salts. It is a relatively advanced recovery and treatment technology for industrial waste acids and has been widely used in the metallurgical indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/10B01D61/28
CPCB01D61/243B01D61/28B01D63/10B01D2313/32B01D2313/44
Inventor 李传润李龙云陶振徐铜文张勤徐兆新汪耀明吴亮曹政荚存兵
Owner HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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